curbing
nounUK /ˈkɜː.bɪŋ/
US /ˈkɝː.bɪŋ/
The act of holding something back or keeping it under control.
The city is curbing waste by asking people to recycle more.
OTHER MEANINGS
2. The stones or edge that form the border of a street or sidewalk.
The car's tire scraped against the curbing as it parked.
3. The material used to make a curb, such as concrete or stone.
Workers laid new curbing along the road.
4. The act of putting a curb or border around something.
The curbing of the garden path took all afternoon.